Generator mounting and drive



March25,1930. -T. s. COLE 1,751,517

GENERATOR MOUNTING AND DRIVE Filed March 26, 1926 '4 Sheets-Sheet ATTORNEY March 25, 1930. s, E 1,751,577

GENERATOR MOUNTING AND DRIVE Filed March 26, 1926 4 Sheets-$heet 2 March 25,1930. T's COLE 1,751,577

GENERATOR MOUNTING AND DRIVE Filed March 26, 1926 4 Sheets-Sheet 3 v m m 4 Sheets-Sheet 4 Filed March 26, 1926 A'i'roRNEY Patented Mar. '25, 1930 UNITED STATES PATENT OFFICE THEODORE s. corn, on NEW HAVEN; CONNECTICUT, ASSIGNOR TO THE SAFETYOAR HEATING & LIGHTING COMPANY, A CORPORATION "01' NEW JERSEY,

'GENERATOB MOUNTING AND DRIVE" 7 Application filed March 26, 1926. Serial No. 97,619.

This invention relates to the mounting and driving of generators and more particularly to apparatus of this nature for use in connection with railway. car lighting apparatus wherein the-electric generator'isdriven from,

the car axle. q c it One of the objects of the invention is to provide an apparatus of the above nature which is thoroughly practical andeficient in action. Another object is to provide appara tus of the above nature which is capable of dependable operation forlong periods of time without requiring attention. 1 Another object is to provide apparatus of the above nature which is'capable of operating dependably in A allconditions of weather. Another objectis to provide apparatus of the above nature which is particularly capable of withstanding the severe usage to which it may be subjected in winter, weather.. Another object is to provide apparatus of the; above nature which is simple in construction, inexpensive and conveniently adaptable to the conditions of practical use. Other objects will bein part obvious or. in part pointed out hereinafter The invention accordingly. consists in the features of construction,combinations ofelements, and arrangements of parts as will be,

exemplified in the structure to be hereinafter described and the scope of the application of which will be indicated in the following claims. A

In the accompanying drawings in which is shown one of the various possible embodiments of this invention,

Figure 1 is a top plan view of a portion of a railway car and the apparatus mounted shown in Figure 1, certain parts being cut away to afford a better view of the structure; p 3

FigureB is an elevation viewed from the right of Figure 2 Figure A is a plan view partly in section tail; v, Figure 5 is a section taken along the line 5-5 of Figure 4,.and

drawings.

additional brackets 22 and 23 which are substantially I Figure 6 is a section taken substantially along the line 6- 6 of Figure l. 7

Similar reference characters refer to similar parts throughout the several views of the Referring now to the drawings in detail,

and first to Figure 1, there are shown parts vof the truck'frame'of a railway car, these parts comprising longitudinally extending side members 10 and 11, a pair of intermediate longitudinal members 12 and 13, and the transverse end member or end sill 14:. The A a shape of the end sill 14 isbetter brought out ciated by reference to Figure 2. Injthis truck frame is rotatably mounted theicar axle 15 carrying the car wheels 16 and 17. The generator'18,to be driven from the car axle 15 is shown supportediclose to the end sill 14 with its axis. substantially at right 'angles to the axis of the car axle. I

The generator 18 is preferably supported by means of a strap 19 which is shaped as brought out in Figures 2 and The strap 19 is carried by a pair ofbrackets 20 and 21 which are respectively secured to and project outwardly from the, longitudinal side members 1 0 and 11 of the truck frame, and also secured at their inner endsto the ndLsill 14,

the brackets'22 and 23 serving tobrace the brackets 20 and;21 against the weight of the generator applied thereto through, the strap 19. The strap 19 as shown in Figures2and 8issecu'redat its twoends over the projecting brackets 20 and 21 and passes, therefrom downwardly beneath the generator, the generator resting in the curve of the strap at its central portion. The strap 19 is preferably madeL-shape in cross-section for strength and the generator casing is secured thereto by bolts 24' passing through a lug 18 formed 7 upon the generator casing.

On the left-hand end of the generator casv ing, as viewed in Figures 1 and 2, is bolted showing the drivlng mechan sm in larger dea a casting 25 which is likewise bolted to the end sill 14 by means of bolts 26. This'casting 25 will be later described detail.

1 will be seen, however, that the generator is rigidly and dependably mounted upon the truck frame by the mounting which has been just described. The weight of the generator is capably handled by the strap 19 and its supporting brackets and, moreover, the position of the generator is fixed with respect to the end sill 14.

Referring again to Figure 1, there are secured upon the car axle 15 at its central portion between the two longitudinal members 12 and'13 a pair of hollow cylindrical metal drums 27 and 28. These drums are positioned upon the car axle 15 in spaced relation and with their open ends facing each other. These drums 2? and 28 are substantially identical so that one only thereof need be described in detail. Each of the drums is formed in two halves and preferably the halves are dove-tailed to lock together along their abutting edges as is shown at 29 in Figure 6.

split sleeve 36 is secured Considering the manner in which these drums 27 and 28 are secured to the axle 15, the drum 27 is secured to a hub 30 (Fig. 1) and the drum 28 is secured to a hub 31. These hubs are each split in two halves which are clamped together about the axle 15 by means of clamping bolts 32 and 33. Re-

ferring to Figure 4, the mounting of the drum28 is shown more in detail. The two halves of the drum-are respectively secured to the two halves of the hub 31 by means of bolts 34. The hub 31 is rigidly clamped about the axle 15 by the bolts 33 through a bushing 35 which is preferably of corrugated sheet metal as shown more plainly in Figures and 6. It will be seen that the two halves of the'druin 28 may be removed without removing the hub 31 from the car axle, this being accomplished by simply removing the bolts 34 and slipping the two halves of the drum out of their dovetailed engagement with each other and out of place.

In order to facilitate assemblyv and mountingof the two metal drums 27 and 28 in proper relation to each upon the car axle, the corresponding halves of the two hubs'30 and 31 are joined together. This is accomplished by means of an inner split sleeve 36 which connects the two hubs. One half of this split sleeve 36 is secured at its end portions respectively to one half of the hub 30 and to one half of the hub 31; the other half of the at its endsrespectively to the other half of the hub 30 and to the other halfof the hub 31. In Figure 4 one half of the split sleeve 36 is shown entering one of the halves of the hub 31 and permanently secured thereto as at 37 along the inner surface of the hub portion.

It will be seen that the drums 27 and 28 are capable of being mounted and properly positioned upon the car axle with the greatest convenience. The hubs and 31 are first clamped into position and, the halves thereof being joined by the split sleeve 36, the hubs are at once properly relationed for the reception of the drums 27 and 28. The drum halves are placed'about the car axle exteriorly of the sleeve 36, they are slid into interlocking relation along their dove-tailed edges andare secured to the hubs by the bolts 34. If it is desired to remove the drums, this may be done by removing the bolts 34 and without disturbing the hubs 30 and 31.

Referring to Figure 4, a shaft 38 extendinpsubstantially parallel to the car axle 15 is located adjacent to the car axle and on the side thereof facing toward the generator 18..

This shaft is centrally positioned with respect to thetwo drums 27 and 28 and the two ends thereof project into the space between the inner surfaces of the drums and the sleeve 36. The shaft 38 has a frictional driving engagement with the interiors of the two drums 27 and 28 this frictional drivin engagement being preferable as will now be desurface 39 is secured as by riveting to a thin steel backing 39" and this backing is secured as by riveting toithe inner surface of the drum 27 or 28 as the case may be. On the end portions of the shaft 38 are provided a pair of rollers which frictio'nally engage the friction surface 39 on the interior of the respective drums 27 and 28. These rollers are preferably constructed and mount-ed upon the shaft 38 as shown in Figure '4. Each roller has a central metal hub 40 which is fitted upon the hexagonal end 38 of the shaft 38 and held in place thereon, for example by a nut 41. The outer surface of the roller (best shown in Fig. 6) comprises a double inner and outer walls thereof an airspace provided with ventilating fins 43. This outer shell is pressed upon an intermediate core portion 44 which is of soft rubber molded about and vulcanized to the inner steel hub or bushing 40.

The yielding construction of the rollers just described prevents the transmission of sudden sharp shocks from the car axle through the drums 27 and 28 to the shaft 38. The air space with its ventilating vanes 43 prevents the rollers with their rubber cores from over-heating. When the friction lining 39 becomes worn it is easily replaceable by simply removing the split drums 27 and 28 as has been described without interfering with the remaining parts of the apparatus.

The shaft 38 at its central portion between the two rollers thereon passes through a casing 45 in which it is rotatably supported prefma by ban bearings 46 and 47. Upon the central portion of the shaft 38 within the casing is provided a bevel gear'48 which is preferably made integral with the shaft.

'Meshing with the bevel gear 48'is a bevel gear 49 which is fixed upon or preferably made integral with a shaft 50 extending sub stantially at right angles to the shaft 38 and projecting therefrom toward the generator 18. The shaft 50 (best shown in Fig. 5) extends through a right angle extension 45 of the casing 45. In this casing the shaft 50 is supported preferably byball bearings 51 and 52, the races for these ball bearings being held in proper spaced relation by a spacing sleeve 53 about the shaft 50 within the casing.

'The casing 45 is adapted to be filled with lubricant which is introduced thereto through a suitable opening in the top of the casing closed by-a plug 54. About the shaft 38' exterior of each of the ball bearings 46 and 47 is provided suitable packing55 (Fig- 4) to prevent the lubricant from' working outwardly along the shaft and into engagement with the rollers thereon or the friction surfaces 89 of the rotating drums. Also, as shownin F igure'5, suitable packing 56 is provided to prevent the lubricant from working outwardly along the shaft 50. Considering now the manner in which "this casing 45 is supported, at its-end next the car axle 15 it is suspended from a'transverse shaft 57 This member 57 as s seen in Figures 1 and ,3, extends between and issupported at its ends 57 and 57 by the longitudinal truck frame .members12 and 13.

Fixed to this shaft 57 is asupporting bearingmember 58 from which is'pivotall'y suspended a yoke 60 through a bearing bolt 61.

. Depending from the yoke 60 is a stud 62 having at the lower end thereof a spherical ball '63 which coacts with a socket beneath a cap 64 secured to the top of the casing 45. This suspension of the forward end of the casing 45, it will be seen, permits of freedom of'inovement of thecasingand hence-of the parts carried thereby in substantially all directions.

The-casing is permittedto move relative to the truck frame-bodllyin'any lateral direction and moreover, because of the-universal suspension by the ball" 63 the casing is free topivot and twist about any axis passing through this ball. As best shown in Figure 4, projecting from the end of the casing 45 toward the generator 18 and on either side of the shaft 50 are a pair of arms 65 and 66 which are preferably formed integral with the cover plate 45".

These arms 65 and 66 serve to support the casing at its portion remote'from the car axle.

At their ends 65 and 66 the arms 65-and jecting arms 25 and 25 at the outer. ends of which are carried a pair of rollers. 67 and 68 respectively. The U-shaped portionsg65 and 66 of the arms 65 and 66 embrace these rollers 67 and 68 respectively. -The end of of the flexible joint. 69 sli'dably fits over the shaft 70 which is an extension of thearma- 15 ture shaft of the generator. 18. The collar 69 and the shaft 70'are keyed together by means of a key 71 so that the rotation of the shaft 50 is transmitted through the flexible coupling 69 to the armatureshaft of the generator, At the same time the key connec tion 71 permits movement of the shaft 50 with its supporting casing 45 back and forth toward and away from the generator.

. Referring to Figure 5,'there is provided between the casing 45 and the casting 25 a heavy coiled tension spring 72. Thisspring preferably is atone end hooked into an eye '73 on the casing 45 and at its other end is hooked into an eye bolt 74 passing through 5 a lug75 on the casting 25 and providedwith an adjusting nut 76. By means of the nut 76 the tension of the spring 72 may be adjusted.

The spring 72 continually urges the casing 45 toward the'right, as viewed in Figures 4 and 5, or toward the generator '18. The

friction rollers carried by the shaft 38 which is mounted in the casing 45 are thus urged into frictional rolling-engagement with the frictional innersurfaces of the rotating Referring to Figure 4,"

drums 27 and 28.

there are preferably provided two additional tension springs 77 and 78, one on either side of the shaft 50. These springs 7 7 and 7 8, urging 'thecasing 45 to the right as does the spring 72, are also preferably provided with tension adjustments 79 and 80. -These two springs 77 and 78 tend to equalize the friction bearing pressure exerted'by the two friction rollers against the respective drums 27 and 28.

As is best seen in Figures 1 and 4, the portion of the-casin 45 adiacent to the car axle 1 is supported between and projects outwardly from between the open ends of the two drums 27 and 28, the twodrums being spaced apart to accommodate this construction. The opening thus left between the two drums is covered a guard 81 which maybe formed of thin sheet metal and which is preferably made in two sections. This guard fits snugly about the casing 45 and is'secured tothe casing 45 and held in place thereby, for example, through the'agency of suitable connections 82 shown inFigure 2. Suflicientclearance is provided between the guard and the outer surfaces of the drums 27 and 28 to permit of the required relative movement of the supporting casing 45 and the, car axle. This guard prevents the access of rain or snowto the'interior of the drums and also keeps out stones or dirt which may be thrown up from the road-bed.

In the operation of this apparatus, a thoroughly dependable frictional engagement is assured'between the friction rollers carried by the shaft 38 and the rotating drums 27 and 28, and the drive of the shaft 38 is positively transmitted through the gears 4-8 and a9 and through the shaft 50 to the generator. The apparatus achieves the advantages of a belt drive and avoids the outstanding disadvantages of the latter. The friction surfaces on the inner sides of the hollow drums .27 and 28, are not exposed to the weather and mitted the casing 45 and hence permitted the friction rollers supported thereby, it will be perceived that play of the parts which may take place in various different directions is fully taken care of by this essentially practical mounting. Regardless of the movement of the car axle resulting from the play between the car axle and the truck frame, the frictional driving engagement between the rollers carried by the shaft 38 and the drums 27 and 28 is dependably maintained without undue strain on any of the parts. The shaft 38 carrying the rollers is capable of any required lateral movement relative to the car axle and capable-of any combination of a bodily movement with a swinging movement about its pivotal suspension. The car axle may move endwise in its bearing, it may move up and down in its bearings at either or both ends or it may move forward or backward at either or bothends due to worn bearings. Regardless of these various movements and degrees of play of the car axle in the car truck, the shaft 38 is so supported that it is capable of moving relative to the truck frame so as to assume the correct position for proper frictional contact of the rollers with the drums without straining the drive or the suspension. 7

The flexible coupling 69 and the slidable driving connection 71 permit continual transmission of the drive to the generator without .strain as the position of the casing 45 shifts in response to the play of the car axle. The yieldingconstruction of the rollers through which the drive is transmitted from the drums to the shaft 38 prevents the transmission of sudden shocks to the gears 48 and 49 and their shafting, this being distinctly advantageous since the transmission of road shocks to the gearing and shafting is particularly harmful.

In addition to the foregoing, it will be seen pact. No lengthy drive shafts or other lengthy power transmitting devices are required. The generator 18 by means of this apparatus is enabled to be mounted close up to the end sill 14f of the truck frame. This is a distinct advantage since such a construction causes very little unbalanced weight on the car truck. The entire apparatus throughout is essentially practical and in achieving many distinct practical advantages is capable of withstanding the severest conditions of use.

As many possible embodiments may be made of the above invention and as many changes might be made in the embodiment above set forth, it is to be understood that all matter hereinbefore set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

I claim as my invention:

1. In apparatus of the class described, in combination, a car axle, a truck frame supported by said car axle and in which said car axle is rotatably mounted, a generator mounted upon said truck frame, a shaft connected to drive said generator and projecting therefrom toward said car axle, means geared to the end portion of said shaft and having a frictional driving connection with said car axle, and a support for said last means universally suspended from said truck frame. I

2. In apparatus of the class described, in combination, a car axle, a truck frame sup ported by said car axle and in which said car axle is rotatably mounted, a generator mounted upon said truck frame, a shaft extending adjacent and substantially parallel to said car axle, a frictional driving connection between said shaft and said axle, a second shaft geared to said first shaft and extending therefrom toward said generator, means universally suspended from said truck frame and rotatably supporting said two shafts, and a flexible joint through which said generator is driven from said second shaft.

3. In apparatus of the class described, in combination, a car axle, a truck frame sup ported by said car axle and in which said car axle is rotatably mounted, a generator mounted upon said truck frame, a shaft extending adjacent and substantially parallel to said axle, a frictional driving connection etween said shaft and said axle, a second shaft having an end portion geared to said first shaft and extending therefrom toward said generator and connected to drive said generator, a support for said two shafts that this entire apparatus is particularly com- 4.-In apparatus of the class described, in-

combination, a car axle, a truck frame sup ported by saidcaraxle and in whichsaidjcar axle is rotatably mounted, a generator mounted upon said truck frame, a shaft extending adjacent and substantially parallel to said axle, a frictional driving connection between SELICl shaft and sald axle, a second shaft having an end portion geared to said first shaft and extending therefrom towardsaid generator,a casingenclosing said gearing and rotatably supporting said two shafts, means mountingsaidcasing upon said frame adapted to permit movement thereof relative to said frame, and means including a flexible joint connecting said second shaft to drive said generator. I I' f r 5. In apparatus of the class described, in combination, a car axle,-a truck frame sup ported by said car axle and in which said car axle is; rotatably mounted, a generator mounted upon said truck frame, a shaft ex tending adjacent and substantially parallel to said axle, a frictional driving connection between said shaft, and said axle, a second shaft having an end portion geared to said first shaft and extending therefrom toward said generator, a casing enclosing said ,gearing and rotatably supporting said two shafts, means mounting said casing upon said frame adapted to permit movement thereof relative to said frame, means including ,a flexible joint connecting said second shaft 'to drive said generator, and spring means acting through said casing to maintain said frictional driving connection. p

6. In apparatus of the class described, in combination, a car axle, a truck frame sup- .portedby said car axle and in which said car axle is rotatably mounted, a generator mounted upon said truck frame, a shaft extending adjacent and substantially parallel to said axle, a frictionaldriving connection between said shaft and said axle, a second shaft having an end portion geared to said first shaft and extending therefrom toward said generator, a casing enclosing said gearing and rotatably supporting said two shafts, a cross member. secured to said frame abovesaid casing, a universal joint suspending said casing from said cross member, and means connecting said second shaft to drive said generator. 7

7. In apparatus of the class described, in combination, a car truck. frame having mounted thereon a car axle, a generator mounted upon said frame',.a shaft having a driving connection with said generator and extending therefrom toward saidaxle and substantially at rightangles to said axle, a second shaft geared to said first'shaft and having .a frictional driving connection with i said axle, a, casing rotatably supporting said two shafts, a pivotal support for said casing adjacent said car axle, and a sliding support for said casing extending adjacent said first shaft and toward 7 said generator.

#8. In apparatus of the class described, in combination, a car truck frame having mounted thereon. a .car. axle, a generator mounted upon-said frame, a shaft havinga driving connection with said generator, and extending therefrom toward said axle and.

substantially at rightangles to said axle, a

second shaft geared to said first shaft and having a frictional driving connection with said axle, a casing rotatably'supportingsaid two shafts, a pivotal support for said casing adjacent said car axle, a. sliding support for said casing 7 extending adjacent said first shaft and toward said generator, and spring 'means aetingjthrough-said casing to main:

tain saidfrictional driving connection.

9. In apparatus of the class described, in comblnation, a car axle, means secured to said car axleto rotate therewith having a :continuous surface encircling sald axle and facing.

independently of said axle and frictionally engaging said surface to be rotated thereby, a shaft driven from said roller, a generator, andmeans connectingsaid shaft to drive said generator. I I

11. 1 In apparatus of the class described, in

combination, a car axle, means secured to said car axle to rotate therewith having a continuous surface enc rclmg sald axle and facing inwardly toward said, axle, a shaft extending-substantially parallel to said axle, means upon said shaft frictionally engaging said surface to drive said shaft'therefrom, a second shaft gearedto said first shaftiand extending substantially at right angles thereto, a generator, and means connecting sai second shaft to drive said generator.

12. In apparatus of the class described, in combination, a car axle, a cylindrical drum secured to said axle to rotate therewith, means substantially closing the ends of said drum,

means frictionally engaging the inner surface of said drum to be driven thereby, a generator, and means connecting said frictionally driven means to drive said generator.

13. In apparatus of theclass described, in

combinatioma caraxle, a cylindrical drum secured to sald axle to rotate therewith, a roller frictionally-engaging the 1nner surer. frictionally engaging the inner surface of said drum to be rotated thereby, a shaft driven by said roller, a generator, a second shaft connected to drive said generator and geared to said first shaft, and a casing rotatably supporting saidtwo shafts and enclosing said gearing. V i

15. In apparatus of the class described, in combination, a car axle, a cylindrical metal drum secured to said axle to rotate therewith,

a continuous frictional surface upon the inner side of said drum, a roller engaging said surface to be rotated thereby, said roller having a body of yielding material and an outer metal shell, a generator, and means connecting said roller to drive said generator.

16. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a frictionsurface rotating with said axle and a roller frictionally engaging said surface, said roller having a body of yielding material and an outer substantially rigid shell in engagement with said friction surface.

17. In apparatus of the class described, in

. combination, a car axle, a generator, and

means forming a driving connection between said axle and said generator including a friction surface rotating with said axle and a roller frictionally engaging said surface, said roller having a body of yielding material and an outer substantially rigid shell in engagement with said friction surface, said yielding body portion and said outer shell being separated by an air space.

18. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a pair qf cylindrical drums secured to said axle to rotate therewith, a shaft extending substantially parallel tosaid axle, rollers upon said shaft frictionally engaging the inner surfaces of said drums, and a second shaft geared to said first shaft andextending at an angle to said axle.

l9. In-apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a pair of cylindrical drums secured to said axle to rotate therewith, a shaft extending substantially parallel to said axle, rollersupon said shaft frictionally engaging the inner surfaces of said drums, a bevel gear upon said shaft, a second shaft, and a bevel gear upon said second shaft mating with said first bevel gear.

20. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a pair of cylindrical drums secured to said axle to rotate therewitln'a shaft extending substantially parallel to said axle, rollers upon said shaft adjacent either end thereof and frictionally engaging'the inner surfaces of said drums and a second shaft connected to drive said generator and geared to said first shaft at an intermediate portion thereof.

21. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a pair of cylindrical drums secured to said axle to rotate therewith and spaced from each other, a shaft parallel to said axle and extending within each of said drums and having means frictionally engaging the inner surfaces of said drums, and a driving connection extending outwardly from said shaft between said two spaced drums to said generator.

22. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a pair of cylindrical drums secured to said axle to rotate therewith and spaced from each other, a shaft parallel to said axle and extending within each of said drums and having means frictionally engaging the inner surfaces of said drums, and a shaft geared to said first shaft and extending outwardly therefrom between said two spaced drums and connected to drive said generator.

23. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between saidaxle and said generator including apair of cylindrical drums secured to said axle to rotate therewith and spaced from each other, ashaft parallel to said axle and extending within each of said drums, a pair of rollers fixed to said shaft one adjacent either end thereof and respectively engaging frictionally the inner surfaces of said two drums, and a shaft geared to said first shaft intermediate said two rollers and extending outwardly between said two spaced drums toward said generator.

24. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a pair of cylindrical drums secured to said car axle to rotate therewith, said drums being each closed at one end and being mounted upon said car axle in spaced relation and with their open ends facing each other, and means frictionally engaging the inner surfaces of said drums. v

-25. In apparatus of the class described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a pair of cylindrical drums secured to said car axle to rotate therewith, said drums being each closed at one end and being mounted upon said-car ax-lein spaced relation and with their open ends facing each other, means frictionally engaging the inner surfaces of .said drums, and means substantiallyclosing the spacebetween said two drums. Y 26. In apparatus of the class described, in combination, a car truck frame having mounted. thereon a car axle, means secured to said 'caraxleto rotate therewith and having a continuous surface encircling said axle, a roller frictionally engaging said surface and rotated thereby, spring means anchored to an end sill of said truck frame and urging said roller into engagement with said surface, a generator, and means connecting said roller tod'rive said generator and adapted to permit movement of said roller relative to said generator,'under the action. of said spring means.

27. In apparatus of the 'cla'ssde' s'cribed, in combination, a car axle, 'a' generator, and

means forming a driving connection between said axle and said generator including a pair of cylindical drums secured to said axle to rotate therewith, a shaft extending substantially parallel to said axle, rollers upon said shaftfrictionally engaging the inner sur-. faces of said drums, a bevel gear upon said shaft, a-second shaft, a bevel gear upon said second shaft mating with said first bevel gear,

a casing rotatably' supporting said two shafts and enclosing said gearing,rand means mounting said casing for movement relative to said car axle. j s

28. In apparatus of the class described, in

combination, a car axle, a generator, and

means forming a driving connection between said axle and-said generator including a pair ofcylindrical drums secured to-said axle to rotate therewith, a shaftextendingsubstantially :parallel to said axle, rollers upon said shaft frictiona'llyengaging the inner surfaces of said drums, a bevel gear upon said shaft,

asecond shaft, a bevel gear upon saidlsecond shaft mating with said first :bevel. gear, a cas ing rotatablyssupporting said two shafts and enclosing said gearing, means mounting said casing for movement relative to said caraxle, and spring means acting through said casing :and urging-said casing in a direction to" hold rsaid rollers 'in said frictional engagement. H

29. In apparatus of thejclass described,'in combination, a car axle, agenerator, and means forming a driving connection between said axle and said generator including a pair of cylindrical drums secured to said axle to rotate therewith, a shaft extending substantially parallel to said axle, rollers upon said shaft frictionall en a in the inner surfaces of said drums, a bevel gear upon said shaft,

a second shaft, a bevel gear upon said second shaft mating with said first bevel gear, a casing rotatab-ly supporting said two" shafts and enclosing said gearing, means mounting rotate therewith, a shaft extending substan tially parallel to said axle, rollers upon said shaft frictionally engaging the'inner surfaces of said drums, a second'shaft geared to said first shaft'and extending at an angle to said axle and connectedto drive said generator, means urging said rollers into engagement with said drums, and "meansfor equalizing the pressure exerted bysaid rollers. .1 31. In apparatus of theclass described, in combination, a car truck frame, a car-axle mounted therein, a generator mounted upon said truck frame and secured to an" end sill thereof with its axis substantial-ly at right.

angles to said car axle, and means forming a driving connection between said-.caraxle and said generator including a shaft frictionally driven from said axle and'g'earing for driving said generator from said shaft. 32. In apparatus of the class described, in combination, acar truck frame, a car axle mounted therein, a generatormounted upon said truck frame, means-forming adriving connection between said car axle and saidgenera-tor including a shaft frictiona'llydriven from said car axle and a second shaft geared to said first shaft and connected to drive said generator, a casing'rotatably supporting/said two shafts, and means mounting said casing upon said truck frame for lateral movement a and swinging movement relative "to-said truck frame.

83. In apparatus of the class -described,in

combination, a car truck frame, a carjaxle mount'ed therein, a generator, means mounting said generator. upon said truck frame comprising means supporting the weight of said generator adjacent anend sill offsaid "truck frame and a'rigid connection between an end part of said generator and said end sill, and means forming a driving-connection between said car axle and said generator.

of the class described,

84. In apparatus of the class described, in

combination, a car axle a; shaft adapted to be driven'from said car axle, and a driving e ing along their abutting edges.

connection between said axle and said shaft including a cylindrical drum secured about said axle to rotate therewith and means upon said shaft frictionally engaging a surface of said rotating drum, said drum being formed in a plurality of abutting sections interlock- 35. In apparatus of the class described, in combination, a car axle, a shaft adapted to be driven from said car axle, and a driving connection between said axle and said shaft including a cylindrical drum about said axle and means upon said shaft frictionally engaging the interior surface of said drum, said drum having radially directed portions, and means mounting said drum upon said axle to rotate therewith comprising a split hub clamped about said axle and to which said radially directed portions of said drum are removably secured.

36. In apparatus of the class described, in combination, a car axle, a shaft extending substantially parallel to said car axle, a. pair of spaced rollers fixed upon said shaft, a pair of cylindrical drums about said car axle having surfaces adapted respectively to engage in frictionaldrivingengagement with said rollers, split hubs for said drums clamped about said axle, means removably securing said drums to said hubs, and means connecting said hubs for holding them in predetermined spaced relation.

37. In apparatus of the class described, incombination, a car axle, a shaft extending substantially parallel to said car axle, a pair of spaced rollers fixed upon said shaft, a pair of cylindrical drums about said car axle having surfaces adapted respectively to engage in frictional driving engagement with said rollers, and means securing said drums to said axle to rotate therewith comprising means clamped about said axle and means removably attaching said drums to said last means.

38. In apparatus of the class described, in combination, a car axle, a cylindrical metal drum'secured about said axle to rotate therewith, said drum being closed at oneen-d, a roller engaging the inner surface of said drum to be rotated thereby, a generator, and driving means entering said drum at the other end thereof and connecting said roller to drive said generator. v

39. In apparatus of the class-described, in combination, a car axle, a generator, and means forming a driving connection between said axle and said generator including a plurality of rotatable members frictionally driven from said axle, means urging said rotatable members into engagement with the parts from which they are frictionally driven, and means for equalizing the pressure exerted by said plurality of members.

40. In apparatus of the class described, in combination, a truck frame, a car axle mounted therein, a shaft extending substantially parallel to said car axle, a driving connection between said axle and said shaft adapted to permit relative movement therebetween, a shaft extending substantially at right angles tosaid car axle and toward an end of said truck, gearing connecting said first shaft to drive said second shaft, and a generator rigidly secured to the transverse end sill of said truck and closely adjacent thereto, a driving connection between said second shaft and said generator adapted to permit relative movement therebetween, and yielding means permitting the movement between the parts connected by said driving connections to be yielding.

11. In apparatus of the class described, in combination, a car axle, a truck frame, a generator, means substantially fixedly securing said generator to said truck frame, means forming a driving connection between said axle and said generator including a member mounted upon and driven by said axle and a coacting member driven therefrom and adapted to drive said generator, and means including a universal joint for supporting said driven member from said truck frame, said driven member having a driving connection with said generator that is yieldable only in a direction toward or away from said generator.

42. In apparatus of the class described, in combination, a car axle, a truck frame, a generator, means forming a driving connection between said axle and said generator including a member mounted upon and driven by said axle and a coacting member driven therefrom and adapted to drive said generator, and means including a ball and socket joint for supporting said driven member from said truck frame.

43. In apparatus of the class described, in combination, a. car axle, a generator, a driving member on said axle, a member driven by said car axle driving member, means ineluding a driving connection between said driven member and said generator and constructed to permit change in its length, and spring means for urging said driven member toward its coacting driving member and for opposing forces as tend to efiect a change in the length of said driving connection.

a l. In apparatus of the class described, in combination, a caraxle, a truck frame, a generator supported thereby and having its shaft extending substantially at right angles to said axle, a cylindrical drum secured to said axle to rotate. therewith, a roller engaging the inner surface of said drum to be rotated thereby, a driving connection between said roller and said generator and including a telescoping connection, and spring means for urging said roller against the inner surface of said drum and for opposing extension of said telescoping connection.

45. In apparatus of the class described, in combination, a car axle, a truck frame, a generator supported thereby and having its shaft extending substantiallyat right angles to said axle, a cylindrical drum secured to said axle to rotate therewith, a roller engaging the inner surface of said drum to be rotated thereby, a driving connection between said roller and said generator and including a telescoping connection, and spring means anchored at one end to said generator and operative throughthe other end thereof upon said roller.

46. In apparatus of the class described, in

combination, a car axle, a generator, a cylindrical metal drum member secured about said axle to rotate therewith, a roller member within said drum member and adapted to be driven therefrom, one of said members having an operative surface made of a friction material, a driving connection between said generator and said roller member, and means substantially closing said drum member and permitting said driving connection to be operative therethrough.

47. In apparatus of the class described, in combination, a car axle, a generator, a gear train having one end connected to said generator, and means forming a driving connection between the other end of said gear train and the axle, said means? including a member mounted upon and driven by said axle, a roller frictionally driven from said car axle member and operatively connected to said gear train, said roller having a body ofyielding material. I 1

48. In apparatus of the class described, in combination, a car axle, a generator, a gear train having one end connected to said genorator, and means forming a driving connec tion between the other end of said gear train and the axle, said means including a member mounted upon and driven by said axle, a roller frictionally driven from said axle member, a shaft connected to the other end of said gear train, and means yieldingly mounting said roller on said shaft.

In testimony whereof, I havesigned my name to this specification this 23d day of 59 February, 1926.

' THEODORE S. COLE. 

